G - Physics – 06 – F
Patent
G - Physics
06
F
354/239
G06F 12/00 (2006.01) G06F 5/10 (2006.01) G11C 8/18 (2006.01) H04J 3/06 (2006.01)
Patent
CA 1273438
ABSTRACT OF THE DISCLOSURE An address comparator is disclosed which compares a write address value and a read address value for designating addresses in an elastic store circuit. More specifically, the count output of a write address counter for counting a write clock signal is decoded by a write address decoder and the count output of a read address counter for counting a read clock signal is decoded by a read address decoder. The respective decoded outputs are classified into a plurality of groups so as to be supplied to a logical circuit group. The logical circuit group provides a signal for giving an alarm when the output address value of the write address counter is applied in a predetermined number of address groups including as the center of the address group to which the output address value of the read address counter belongs. With such an arrangement, a timing difference between a write address value and a read address value can always be observed and, even if the timing difference is changed rapidly, the timing difference entering the alarm zone can be detected.
507821
G. Ronald Bell & Associates
Mitsubishi Denki Kabushiki Kaisha
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